/*******************************************************************************
 * Copyright 2011 Mile Orešković
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.mileoresko.hierarchism;

public class HSMTransitionIdentifier {
    private final HSMBareState sourceState;
    private final HSMEvent event;

    public HSMTransitionIdentifier(final HSMBareState sourceState, final HSMEvent event) {
        this.sourceState = sourceState;
        this.event = event;
    }

    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof HSMTransitionIdentifier)) {
            return false;
        }
        final HSMTransitionIdentifier other = (HSMTransitionIdentifier) obj;
        if (event == null) {
            if (other.event != null) {
                return false;
            }
        } else if (!event.equals(other.event)) {
            return false;
        }
        if (sourceState == null) {
            if (other.sourceState != null) {
                return false;
            }
        } else if (!sourceState.equals(other.sourceState)) {
            return false;
        }
        return true;
    }

    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + (event == null ? 0 : event.hashCode());
        result = prime * result + (sourceState == null ? 0 : sourceState.hashCode());
        return result;
    }
}
